sqlite_query
SQLiteDatabase::query
(PHP 5 < 5.4.0, PECL sqlite >= 1.0.0)
sqlite_query -- SQLiteDatabase::query — Executes a query against a given database and returns a result handle
설명
$dbhandle
, string $query
[, int $result_type = SQLITE_BOTH
[, string &$error_msg
]] )$query
, resource $dbhandle
[, int $result_type = SQLITE_BOTH
[, string &$error_msg
]] )객체 기반 형식 (method):
$query
[, int $result_type = SQLITE_BOTH
[, string &$error_msg
]] )
Executes an SQL statement given by the query against
a given database handle.
인수
-
dbhandle -
The SQLite Database resource; returned from sqlite_open() when used procedurally. This parameter is not required when using the object-oriented method.
-
query -
The query to be executed.
Data inside the query should be properly escaped.
-
result_type -
선택적인
result_type인수는 반환하는 배열이 어떤 형식일지에 대한 대한 상수를 받습니다.SQLITE_ASSOC를 사용하면 연상배열(이름 필드)로 반환합니다.SQLITE_NUM은 수치배열(순차적인 필드 번호)를 반환합니다.SQLITE_BOTH는 연상 및 수치를 동시에 반환합니다.SQLITE_BOTH가 기본값입니다. -
error_msg -
The specified variable will be filled if an error occurs. This is specially important because SQL syntax errors can't be fetched using the sqlite_last_error() function.
Note: (MySQL 같은) 다른 데이터베이스 확장과 호환성을 유지하기 위하여 두가지 다른 형식의 문법을 지원합니다. 권장하는 방식은
dbhandle인수를 함수의 첫번째 인수로 사용하는 것입니다.
반환값
This function will return a result handle실패 시 FALSE를 반환합니다.
For queries that return rows, the result handle can then be used with
functions such as sqlite_fetch_array() and
sqlite_seek().
Regardless of the query type, this function will return FALSE if the
query failed.
sqlite_query() returns a buffered, seekable result handle. This is useful for reasonably small queries where you need to be able to randomly access the rows. Buffered result handles will allocate memory to hold the entire result and will not return until it has been fetched. If you only need sequential access to the data, it is recommended that you use the much higher performance sqlite_unbuffered_query() instead.
변경점
| 버전 | 설명 |
|---|---|
| 5.1.0 |
Added the error_msg parameter
|
주의
SQLite will execute multiple queries separated by semicolons, so you can use it to execute a batch of SQL that you have loaded from a file or have embedded in a script. However, this works only when the result of the function is not used - if it is used, only the first SQL statement would be executed. Function sqlite_exec() will always execute multiple SQL statements.
When executing multiple queries, the return value of this function
will be FALSE if there was an error, but undefined otherwise (it might
be TRUE for success or it might return a result handle).
참고
- sqlite_unbuffered_query() - Execute a query that does not prefetch and buffer all data
- sqlite_array_query() - Execute a query against a given database and returns an array
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